Electric gas-lighter.



H. D. GRINNELL. ELECTRIC GAS LIGHTER.

APPLICATION FILED JULY 20, 1911.

1,032,203. Patented July 9, 191.2.

@Il It cnLUMBlA PLANQGRAPH cn.. WASHINGTON, D. c.

HAROLD DUNCAN GRINNELL, OF PITTSFIELD, MASSACHUSETTS.

Specification of Letters Patent.

ELECTRIC GAS-LIGHTER.

Patented Ju1'y9,1912.

Application led July 20, 1911.` Serial No. 639,643.

T 0 all whom it may concern Be it known that I, HAROLD D. GRIN- NELL, a citizen of the United States, and a resident of Pittsfield, in the county of Berkshire and State of Massachusetts, have invented a new and Improved Electric Gas- Lighter, of which the following is a full, clear, and exact description.

The invent-ion relates to electric gas lighters, such as shown and described in the application for Letters Patent of the United States, No. 596,048, filed by me on December 7, 1910.

The object of the present 'invention is to provide a new and improved electric gas lighter having spark terminals for convenient and quick attachment to the gas burner tip without requiring any constructive changes in the tip, at the same time directing the jump spark across the burner opening to ignite the gas, and to prevent the spark terminals from being unduly heated by the gas iiame of the burner. For the purpose mentioned use is made of caps for attachment to the arms of an acetylene gas burner or other burner, the caps having sparking points extending toward each other and terminating at opposite sides of a gas outlet opening, so that a jump spark passing from one pointto the other ignites the gas issuing through the said outlet openm0'.

Ik practical embodiment of the invent-ion is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l isa sectionalv side elevat-ion of the improved electric gas lighter as applied to an acetylene gas burner, the section being on the line l-l of Fig. 2; Fig. 2 is a plan view of the same; and Figs. 3 and t are plan views of the blanks for forming the terminal caps.

The burner tube A carrying the acetylene gas or other gas burner tip B extends through an opening C formed in the bottom C2 of a lamp casing C, and the said burner tube A is provided with a flange A resting on the upper surface of the bottom C2. On top of the flange A is seated a base D, of a suit-able insulating material, and the said base is fastened in position by bolts E engaging the bottom C2 of the lamp casing C. The base D is provided with a central opening D through which extends the burner tube A.

Binding posts F are held on the base D and are connected by wires G with a source of electrical energ and the said binding posts F are provided with. transversely-extending arms F supporting hooks F2 engaged by the lower ends of resilient members H, preferably in the form of coil springs hooked at their upper ends onto hooks I2 ot spark caps I and I attached to the upper ends ofthe angular arms of the burner tip B. Each of the spark caps I and I is preferably made from a single piece ot' sheet metal (meteor metal or other heat-resisting metal) and the strip of sheet metal is cut to form an end plate I3 from which extends the hook I2, and on opposite sides ot' the end plate I3 are arranged apertured lugs I4, I5, and spark points I6 extend from the end plate IS directly opposite the hooks I2, as will be readily understood by reference to Figs. 3 and 4. The end plate I3 lits onto the end of the corresponding angular arm of the burner tip B, and the hooks I2 are bent at right angles to the end plate I3 and against the underside of the Vburner tip arm so as to receive the end of the corresponding resilient member H. The apertured lugs IL and I5 are likewise bent at a right angle to the end plate I3, so as to overlie the front and rear faces of the corresponding arm of the tip B, and the openings in the lugs I, I5 register with the air holes leading to burner tip gas outlets B, so as not to obstruct the free flow of the air to the outlets B. The spark points I6 for the caps I and I are of different length, that is, as shown in the drawings, the spark point I6 for the cap I is very short and terminates adjacent the gas outlet opening of the right-hand arm of the tip B on which the cap I is fitted. The spark point I6 of the spark cap I is sufficient-ly long to extend down the left-hand arm of the tip B and up the right-hand arm, to terminate adjacent the gas outlet opening B opposite the short spark point I6 of the cap I. The long spark point I6 is provided with an opening I7 registering with the gas outlet opening on the leftha-nd arm of the tip B, so as to permit a free escape of gas through the said outlet opening' B and the opening I7. B. forming caps ,in the manner described. t ey can readily be placed in position on the ends of the arms of the burner tip B, and by having the resilient members H connected with the hooks I2, itI is evident that the said resilient members Il. serve to hold the caps iirmly in position, as the pull exerted by the resilient members is in a downward direction. It will also be noticed that the caps I and I can be removed from the ends of the tip arms without disconnecting the resilient members H trom the caps.

It is understood that when the elect-ric gas lighter is used a jump spark passes from one spark point I6 to the other across the opening B on the left-hand arm of the tip B so that the gas escaping through the said opening is ignited and thus it ignites the gas issuing from the gas outlet B on the other arm of the t-ip B.

It will be noticed that the caps I and I tit very snugly on the arms of the burner tip B, and hence do not come in direct contact with the flame of the burner, and consequently the caps are not unduly heated by the llame.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

l. In an elect-ric gas lighter, a plurality of caps adapted to be mounted on the arms ot' a burner tip and having integral spark points extending toward each other and adapted Ito overlie the burner tip arms, the points being spaced apart at a gas outlet opening ofthe burner tip, the said caps also having integral hooks, and resilient members of conducting material and connected with the said hooks to hold the caps in position on the burner tip arms, the said resilient members having elasticity sutiicient to permit o't disconnecting` the caps from the burner tip arms.

2. In an electric gas lighter, a pair of caps adapted to be freely disposed on the burner tip and having integral spark points extending toward each other and spaced apart at the outlet opening ot the burner tip and resilient members engaging portions of said caps to hold the same in position.

In an electric gas lighter, a pair of eapsadapted to be freely disposed on a burner tip, said caps being formed ot sheet metal bent to provide end plates for engagement with the end of the burner tip, and

apertured lugs for engagement with the .i

front and rear sides ot the tip at the air supply holes, and spark points extending to one ot the gas outlet openings oit' the tip, said caps being` further provided with depending hools, and resilientconductors engaging the said hooks for maintaining the caps in position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HAROLD DUNCAN GRINNELL.

Vitnesses MARY K. MURPHY, MILTON B. WARNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

